Move the contents of the folder Tray in your folder Tray, which is located at: C: / My Documents / Electronic Arts / The Sims 4 / Tray. And the contents of the folder Mods in your folder Mods, which is located at C: / My Documents / Electronic Arts / The Sims 4 / Mods.

How to find a Sim in the game.Sims will be in your library (F4).

You go to the library, do not forget to click on the Additional materials! and select Sima. Or to find a sim by name in the search box (top right corner), enter a name.